Improvement in tenonlng-machlnes



2 Sheets-Sheet 2.

W M SACK Tenoning -Machines.

Patented Oct. 21,1873.

$4? fifi M S Q 6 w m t UNITED STATES PATENT OFFICE.

WILLIAM M. SACK, 0F OAKLAND, CALIFORNIA.

IMPROVEMENT IN TENNING-MACHINES.

Specification forming part of Letters Patent No. 143,848, dated October2 1, 1873; application filed January 24, 1873. r

To all whom it may concern.-

Be it known that 1, WILLIAM M. SACK, of.

Oakland, Alameda county, State of California, have invented anImprovement in Tenoning- Machines; and I do hereby declare thefollowformed on their ends by the tenoning-machine into a double tenon,and at the same time boring out the groove or channel inwhich the rodwhich connects the blind-slats rests when the slats are closed.

In order to explain my invention so that others will beable tounderstand its construction and operation, reference is had to the accompanying drawings forming a part of this specification, in which--Figure 1 is a top or plan view. Fig. 2 is a side elevation. Fig. 3 is atransverse section taken through Fig. 1.

A represents a frame having the two parallel track-rails b b secured toits upper side edges. Secured upon the tracks I) b are two adjustableguide-frames, c 0, one of which is placed at each end of the frame A.Arod, d,

.passes longitudinally through the frame A,

midway between the tracks b and below the guide-frames c 0, having aright-hand screw formed at one end and a left-hand screw on .theopposite end. These screws pass through one of the outside pieces of theguide-frames c c at each end, so that by turning the rod in eitherdirection the two frames 0 c wi1l be moved simultaneously to, or fiomthe middle line of the frame A, according to the direction in which therod is turned. Clamp-screws K serve to fix the guide-frames in placewhen they have been adjusted. A sliding frame, E, is arranged to moveupon the tracks b b, inside of each of the guide-frames c c, and a shortshaft is supported in boxes at one side of the sliding frame. A cutter,g, which will be hereafter more fully described, is secured to the innerend of these shafts, and about midway between the tracks b b. A shortscrewro'd, h, is supported at each end of the frame A, below the frames0 E, andparallel with the rod d, and is revolved by small toothed wheels12 c from the rod d. These screws pass through a pendant fiom thesliding frames E, so that the same operation that adjusts theguideframes 0 0 also adjusts the sliding frames E with them. Transverseshafts I pass across below the upper timbers of the frame A, and uponeach side of its middle, being properly supported. from the frame. Eachof these shafts has a fixed arm, m, secured to it, opposite the end ofthe short screws h. A rod, n, connects the extremity of this arm withthe end of the screw by means of a imiversal joint at 0, so that whenthe shafts l are partly revolved by means of the crank 1), rod q, andtreadle r at the front side of the machine the arms m will draw thesliding frames E toward the middle of the frame A. Secured transverselyacross the middle of the frame A, and midway between the frames 0 E, isa vertical frame, S, which is also adjustable back and forth by means ofa screw-rod, t. Inside of this frame is a sliding frame, 02, which ismoved in a direction at right angles to the movement of the fi'ames E bya bell-crank and rod connection with the treadle a". A vertical shaft,V, is supported in the sliding frame 72, which carries at its upper endan upright hollow screw-lipped auger, Z. W W are two drums upon adriving-shaft which passes longitudinally through the lower part of theframe A. The short shafts f are driven by means of a belt, X, from thesedrums, so as to give the cutters g the desired speed, and another belt,9, drives a short horizontal shaft, 3 at the rear of the machine, fromwhich the vertical shaft V which carries the auger Z receives itsmotion. The cutters g each consist of two or more double cam-shapedcutters or chisels,

which are arranged upon the same shaft close together, so that theircutting-points will be equidistant apart. The points of these cuttersmay be of any desired width, and by increasing their number the width ofthe cut may be increased as desired.

In arranging these cutters to out more than two tenons a washer can beplaced between each two or more series of the cutters. The end piece orrail of the blind-frame having had laid with its middle upon the upperedge of the vertical frame S, and the guide-frames c c 7 and slidingframes E E adjusted so that the shoulder of the tenon will be caught bythe flange or upturned guides marked 2 on the inner cross-timber of theguideframe. A stopbar, marked 1, is secured to each of the slidingframes E by a bolt-and-slot fastening, so that the bar can be adjustedas desired. The opposite extremity of this bar servesto limit themovement of the frames E E coming in contact with the shoulder of therail'when the frames move toward each other, thus also regulating thedepth of the part out out by the cutters. The vertical frame S is thenadjusted so that the hollow screw-lipped, auger Z will make the properdepth of channel. The adjustment having been completed, a lever-clamp,3, is placed so that the block 4 will bear upon the strip, when a slightpressure by the hand of the operator on the extremity of the lever willhold the rail in place. Everything being in motion the operator presseshis weight upon the treadle a". The sliding frames E E move toward eachother and cause the revolving cutters to remove a certain portion fromthe middle of the wide tenon, and thus form two narrow tenons while thehollow auger makes the proper channel at one side, at its middle. Assoon as the pressure upon the treadle is removed springs properlyapplied will force the operating parts back to their original positionready to operate upon another ra1 By means of this machine the end railsof blind-frames can be trimmed with great rapidity, and much time andlaborsaved in finishing them.

Having thus described my invention, what I claim, and desire to secureby Letters-Patent is a 1 The tracks b b, with their adjustable permanentframes 0 c and sliding frames E E, in combination with the rod 01, withits right and left hand screws and screw-rod h, operated from the rod bymeans of the toothed wheels 1' '1', substantially as and for the purposeabove described.

2. The adjustable frames 0 c, in combination with the sliding frame Ewith its short shaft f,'c'utter g, and stop-bar 1, substantially asandfor the purpose above described.

3. The operating crank-shaft I, with its fixed arm m, the extremity ofwhich is connected with the screw-rod h and universal joint 0,substantially as and for the purpose above described.

4. The transverse vertical frame S, with its sliding frame n, carryingthe vertical shaft V with its hollow screw-lipped auger- Z and itsoperating mechanism, substantially as and for the purpose QLDOXQdescribed.

5. A machine for relishing the end rails of blind-frames, the sameconsisting of two adjustable sliding frames, E and O, carrying revolvingcutters, and a vertical transversely moving frame carrying a verticalside-cutting auger, all constructed, arranged, and operatedsubstantially as and for the purpose above described.

In witness whereof I hereunto set my hand and seal.

WILLIAM M. SACK. [L.

Vitnesses JOHN L. BOONE, G. M. RICHARDSON.

